McKee v. Gratz

Background

A landowner (through an assignor) sued manufacturers who took live mussels from the land, boiled them on the bank, and made the shells into buttons. The plaintiff filed two claims: one for conversion of the shells and one claiming the shells were part of the land and entitled to treble damages under a Missouri statute. The suit began in state court and was removed to federal court; the District Court directed a verdict for the defendants and the appeals court affirmed.

Reasoning

The central question was whether Missouri laws that declare title to game and fish in the State meant the landowner lost any private interest in the mussels. The Court said those statutes were tools for regulation and did not destroy the plaintiff’s private interest. The opinion emphasized that mussels, which are stationary and found in fixed habitat, differ from migratory birds and fish and can be treated as in the landowner’s possession, especially shells left piled on the bank. But the Court also held it could not rule as a matter of law that the takers were trespassers because widespread local practice might have implied a license to collect mussels; those factual questions belong to a jury. The Court further limited recoverable damages to the shells’ value at the time of taking, not increased value after they were made into buttons.

Real world impact

This ruling lets landowners pursue conversion claims for mussels taken from their land and receive the shells’ value at the time they were taken. Harvesters who can show a customary local permission may avoid liability. The decision does not finally settle state-law issues and sends the case back for a jury trial to resolve facts about trespass and license.

Dissents or concurrances

The opinion does not report any dissent; the Court affirmed the judgment but narrowed some principles applied by the appeals court.